12
RL
RR
Connect the Stereo RCA outputs (FL/FR & RL/RR)
of the headunit withthe LINE IN CH1 / CH2
and CH3 / CH4 of the amplifier
FR
FL
Speaker
left
2 – 8 Ohms
Speaker
right
2 – 8 Ohms
Switch setting CH1/2: HPF oder FULL
Switch setting CH3/4: LPF/BPF
Switch setting INPUT: 4 CH
INTERCONNECTION
• Connect the RCA lineouts of the headunit with the RCA jacks LINE IN of the amplifier with appropriate high-value RCA cables.
If a separate SUB OUT from your headunit is available, use this for the LINE IN CH3/4 on the amplifier.
• Connect the speakers with SPEAKER CH 1 - and + CH 2 -, and the subwoofer with the SPEAKER OUTPUTS CH3/4
+ BRIDGED - of the amplifier.
• Ensure by any means, that the total impedance load of all speakers per channelpair (CH1 & CH2) is not lower than 2 ohms and the total
impedance load of the subwoofer (CH3 & CH4) is not lower than 4 ohms. Too low impedance cause high temperature and will shut down
the amplifier operation.
INPUT SWITCH
• Select the 4CH position on the INPUT MODE switch. If there is only one RCA stereo audio cable from the headunit available, connect
the CH1/2 RCA line inputs and select the 2CH position.
CROSSOVER SETTINGS CH1/2 (STEREO SYSTEM)
• See the regarding notes on page 22.
LEVEL CONTROLLER CH1/2 (STEREO SYSTEM)
• See the regarding notes on page 22.
CROSSOVER SETTINGS CH3/4 (SUBWOOFER )
• See the regarding notes on page 23.
LEVEL CONTROLLER CH3/4 (SUBWOOFER )
• See the regarding notes on page 23.
BOOST CONTROLLER CH3/4 (SUBWOOFER )
• The BOOST controller adjusts the bass enhancement between 0db and +12dB.
• A too high bass boost may cause clipping/distortion and damage on the loudspeakers and also may harm your hearing abilities.
Use this controller carefully!
REMOTE BASS LEVEL CONTROLLER CH3/4 (SUBWOOFER )
• The enclosed remote BASS LEVEL Controller adjusts the bass-level e.g. from the driver’s seat.
Please use only the enclosed controller and cable.
MERCURY IV
|ENG
27
EXAMPLE 3-Channel Mode: 1 x Stereo System & 1 x Mono Subwoofer bridged
Subwoofer
4 – 8 Ohms
Connect the bass level
controller on the amplifier
with the enclosed cable.
